%0 Journal Article %T Targeted Cancer Therapy-on-A-Chip. %A Abed H %A Radha R %A Anjum S %A Paul V %A AlSawaftah N %A Pitt WG %A Ashammakhi N %A Husseini GA %J Adv Healthc Mater %V 0 %N 0 %D 2024 Aug 5 %M 39101627 %F 11.092 %R 10.1002/adhm.202400833 %X Targeted cancer therapy (TCT) is gaining increased interest because it reduces the risks of adverse side effects by specifically treating tumor cells. TCT testing has traditionally been performed using two-dimensional (2D) cell culture and animal studies. Organ-on-a-chip (OoC) platforms have been developed to recapitulate cancer in vitro, as cancer-on-a-chip (CoC), and used for chemotherapeutics development and testing. This review explores the use of CoCs to both develop and test TCTs, with a focus on three main aspects, the use of CoCs to identify target biomarkers for TCT development, the use of CoCs to test free, un-encapsulated TCTs, and the use of CoCs to test encapsulated TCTs. Despite current challenges such as system scaling, and testing externally triggered TCTs, TCToC shows a promising future to serve as a supportive, pre-clinical platform to expedite TCT development and bench-to-bedside translation.